Island



(No Model.)

J. S. PALMER.

PLATED WIRE STOCK FOR. JEWELRY.

No. 394,603. Patented Dec; 18, 1888.

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UNITED STATES PATENT OFFICE.

JOHN S. PALMER, OF PROVIDENCE, RHODE ISLAND.

PLATED-WIRE STOCK FOR JEWELRY.

SPECIFICATION forming part of Letters Patent No. 394,603, dated December 18, 1888.

Application filed June 4, 1888. Serial No. 275,992. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN S. PALMER, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Platedire Stock for Manufacture of Jewelry; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My present invention consists in a wire of base metal overlaid with gold, silver, platinum, or other precious or more valuable metal, such plating or overlying metal having a variable thickness, whereby when this compound or plated wire is fabricated into articles of jewelry the part or parts exposed to the most wear shall have the plate thicker, and therefore more durable, than the other part or parts, which are less liable to wear.

Figure 1 illustrates a view of plated stock enlarged, having a form in cross section adapted for making plain finger-rings of about a semicircular form in their cross-section; Fig. 2, a cross-section of the same; Fig. 3, a cross-section of another piece of plated wire made with two thick and two thin sides and suitable for being made 'into chains or other articles; Fig. i, a cross-section representing another variety, being a double wire, and the two outer sides having the thicker plate; and Fig. 5 illustrates a plated bar of varying thickness from which my improved wire stock may be made, either from strips or disks cut from such plate, as hereinafter stated.

A in all the figures indicates the core or filling wire of baser metal, and B the outer or more valuable metal, which constitutes the plating metal which overlies the wire. These improved wires may be made in a variety of ways-as, for instance, by first making the wire with a plating of uniform thickness and then shaving, )laning, grinding, rolling, or otherwise removing a portion of the plating from one side or face, as shown, for instance, at c in the several figures, or the precious metal may be reduced to the desired thinness at certain parts by striking or by any manner of forging prior to plating it upon the baser metal; or this reduction may be made at any stage in the formation of the wire, and whether the plated wire be made from strips of plated metal having the plate of varying thickness, and then bending the same to a tubular form and closing the seam; or it may be made from thimbles drawn from disks cut from plate of varying thickness, or by varying the thickness by passing thimbles, which have been drawn of uniform thickness, through dies having cuttingedges, as de scribed in my patent, No. 383,239, dated May 22, 1888; or be made from plated wire in which the plate is of uniform thickness, and then brought to its desired varying thickness by pulling the same through dies having cuttingedges, as described in my patent, No. 383,241.

Still another way of making my improved wire is to take a flat bar of base metal and solder it to a thinner one of more valuable metal and by rolling or other means make in the outer surface of this thinner plate parallel rows of grooves disposed so as to leave a series of intervening ridges or ribs, which ultimately, when this compound bar is drawn down to the needed thinness for fabrication into jewelry, still leave the plate of varying thicknesses at the predetermined parts. This plated bar is then cut lengthwise into strips through some of these thinner portions, as shown, for instance, in dotted lines 2 z in Fig. 5, and one of such strips may have a single line or swell of thicker platesuch, for instance, as shown at .rand another strip of a different contour of platesay with two such lines or swells, as shown at y. These strips being then bent to the form of a tube and the edges closed by soldering, and then drawn down to the desired degree, are ready to be fabricated into the various articles intended.

The dotted lines in Fig. 5 indicate the out line of disks which may be cut from the plates of varying thickness to be converted into Plated-wire stock composed of wire overplatedthimbles,andtlienceformedinto plated laid with a more valuable metal of varying wire. thickness, substantially as set f0rtl1.-

I do not herein claim anything claimed in 5 my pending applicatiom'serial No. 275,991, \Vitnesses:

filed on June 4, 1888. GILMAN E. .ToPP,

I claim as new- ROBERT S. EDWARDS.

JOHN S. PALMER. 

